Via the Primary Monitor Blog:

John McCain has doubled his support since mid-December and leads Mitt Romney, 35 percent to 29 percent, according to a Concord Monitor/Research 2024 post-Iowa survey of likely Republican primary voters in New Hampshire. Mike Huckabee was the choice of 13 percent of those surveyed, followed by Rudy Giuliani at 8 percent, Ron Paul at 7 percent, Fred Thompson at 3 percent and Duncan Hunter at 1 percent.

Among likely Democratic primary voters, Barack Obama was the choice of 34 percent of those surveyed and Hillary Clinton was the choice of 33 percent, suggesting the race is a virtual dead heat. John Edwards was next at 23 percent, followed by Bill Richardson at 4 percent and Dennis Kucinich at 3 percent.

Most interesting–McCain’s move since mid-December is impressive, and bad news for Romney. Meanwhile, Clinton-Obama should make for an interesting night.